EP 0796034 B1 20010523 - Piezoelectric acoustic transducer
Title (en)
Piezoelectric acoustic transducer
Title (de)
Piezoelektrisch-akoustischer Wandler
Title (fr)
Transducteur piézo-électrique-acoustique
Publication
Application
Priority
- JP 5355896 A 19960311
- JP 2565797 A 19970207
Abstract (en)
[origin: EP0796034A2] A piezoelectric acoustic transducer that can be reliably and easily connected with an external conductor without detracting from the vibration characteristics of the piezoelectric acoustic transducing element is provided. A first case member (11) is provided with an acoustic hole (110) continuous with an internal space (10). A piezoelectric acoustic transducing element (2) is constituted by mounting a piezoelectric element (22) on one surface (211) of a diaphragm (21) and is housed inside the case (1) partitioning the internal space into two portions. Ends (311) and (321) of terminal members (31) and (32) respectively are connected to the piezoelectric element (22) inside the case (I), their middle portions (312) and (322) are held between the first case member (11) and the second case member (12) and the portions that are beyond the middle portions (312) and (322) are led out to the outside of the case (1) to constitute spring pieces (313) and (323), which are folded upward and back over the one surface of the second case member (12). <IMAGE>
IPC 1-7
IPC 8 full level
G10K 9/122 (2006.01); H04R 1/06 (2006.01); H04R 17/00 (2006.01); H04R 17/02 (2006.01)
CPC (source: EP US)
H04R 17/02 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0796034 A2 19970917; EP 0796034 A3 19980708; EP 0796034 B1 20010523; DE 69704897 D1 20010628; DE 69704897 T2 20010906; JP 3824185 B2 20060920; JP H09307997 A 19971128; US 5889873 A 19990330
DOCDB simple family (application)
EP 97301606 A 19970311; DE 69704897 T 19970311; JP 2565797 A 19970207; US 81436497 A 19970311